tack down
B2 neutral separable transitive
In simple words
Use small nails or pins to hold something flat against a surface so it doesn't move
Literal meaning: To use tacks (small nails) to push something down flat — entirely transparent.
Meanings
1 B2 neutral
To fasten something to a surface using small nails, tacks, or staples so it lies flat
"She tacked down the corners of the carpet to stop people from tripping over them."
Grammar: separable
2 C1 neutral
(Sewing) To temporarily stitch or baste a piece of fabric to keep it in place before the final sewing
"Tack down the lining before you sew the hem so it doesn't shift."
Grammar: separable
Usage notes
Common in home improvement, upholstery, sewing, and carpentry contexts. 'Tacking down' carpet edges and fabric hems are among the most frequent uses.
Commonly used with
carpet fabric trim edge felt vinyl
Forms
Base
tack down
I/you/we/they
3rd person
tacks down
he/she/it
Past simple
tacked down
yesterday
Past participle
tacked down
have + pp
-ing form
tacking down
continuous
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