1 tr. make or become fixed or secure.
2 tr. (foll. by in, up) lock securely; shut in.
3 tr. a (foll. by on, upon) direct (a look, thoughts, etc.) fixedly or intently. b focus or direct the attention fixedly upon (fastened him with her eyes).
4 tr. (foll. by on, upon) fix (a designation or imputation etc.).
5 intr. (foll. by on, upon) a take hold of. b single out.
Derivatives:
fastener n.
Etymology: OE faeligstnian f. Gmc
Useful english dictionary. 2012.